状态模式代码及类图

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1、状态模式类图代码publicinterfaceState{publicvoidinsertQuarter();publicvoidejectQuarter();publicvoidturnCrank();publicvoiddispense();}publicclassSoldOutStateimplementsState{GumballMachinegumballMachine;publicSoldOutState(GumballMachinegumballMachine){this.gumballMachine=gumballMachine;}publicvoidinsertQua

2、rter(){System.out.println("Youcan'tinsertedaquarter,themachineissoldout");}publicvoidejectQuarter(){System.out.println("Youcan'tejest,youhaven'tinsertedaquarteryet");}publicvoidturnCrank(){System.out.println("Youturned,buttherearenogumballs");}publicvoiddispense(){5System.out.println("Nogumballd

3、ispensed");}}publicclassSoldStateimplementsState{GumballMachinegumballMachine;publicSoldState(GumballMachinegumballMachine){this.gumballMachine=gumballMachine;}publicvoidinsertQuarter(){System.out.println("Pleasewait,we'realreadygivingyouagumball");}publicvoidejectQuarter(){System.out.println("S

4、orry,youalreadyturnedthecrank");}publicvoidturnCrank(){System.out.println("Turningtwicedoesn'tgetyouanothergunball!");}publicvoiddispense(){gumballMachine.releaseBall();if(gumballMachine.getCount()>0){gumballMachine.setState(gumballMachine.getNoQuarterState());}else{System.out.println("Oops,outo

5、fgumballs!");gumballMachine.setState(gumballMachine.getSoldOutState());}}}publicclassHasQuarterStateimplementsState{GumballMachinegumballMachine;publicHasQuarterState(GumballMachinegumballMachine){this.gumballMachine=gumballMachine;}publicvoidinsertQuarter(){System.out.println("Youcan'tinserteda

6、ntherquarter");}publicvoidejectQuarter(){System.out.println("Quarterreturned");gumballMachine.setState(gumballMachine.getNoQuarterState());}publicvoidturnCrank(){System.out.println("Youturned...");gumballMachine.setState(gumballMachine.getSoldState());}publicvoiddispense(){System.out.println("No

7、gumballdispensed");}}publicclassNoQuarterStateimplementsState{GumballMachinegumballMachine;publicNoQuarterState(GumballMachinegumballMachine){this.gumballMachine=gumballMachine;5}publicvoidinsertQuarter(){System.out.println(